Date: Mon, 8 Dec 2003 17:12:20 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: freebsd-ppc@freebsd.org Subject: BREAK_TO_DEBUGGER Message-ID: <16340.63300.545320.669373@grasshopper.cs.duke.edu>
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May I commit the appended patch? It allows me to actually
use ddb and BREAK_TO_DEBUGGER. It seems to work fine:
FreeBSD/powerpc (g4) (ttya)
login: [halt - sent]
Stopped at 0x191184: or r26, r3, r26,
db> t
0xeb4d6c20: at zs_intr+0x5c
0xeb4d6c40: at intr_handle+0x38
0xeb4d6c60: at openpic_intr+0x4c
0xeb4d6c80: at powerpc_interrupt+0x5c
0xeb4d6cb0: kernel EXI trap by sched_runnable+20: srr1=0x209032
r1=0xeb4d6d60 cr=0x40007ba8 xer=0 ctr=0x31a5dc
<?> : at idle_proc+0x54
0xeb4d6d60: at _end+0x3fc5ea44
0xeb4d6d70: at idle_proc+0x54
0xeb4d6da0: at fork_exit+0xc4
0xeb4d6dd0: at fork_trampoline+0xc
saved LR(0x7c0802a2) is invalid.
db> c
Thanks,
Drew
Index: powerpc/include/cpufunc.h
===================================================================
RCS file: /home/ncvs/src/sys/powerpc/include/cpufunc.h,v
retrieving revision 1.18
diff -u -r1.18 cpufunc.h
--- powerpc/include/cpufunc.h 23 Feb 2003 13:47:44 -0000 1.18
+++ powerpc/include/cpufunc.h 8 Dec 2003 21:52:27 -0000
@@ -47,16 +47,17 @@
struct thread;
-#ifdef __GNUC__
+#ifdef DDB
+void ddb_trap(void);
+#endif
static __inline void
breakpoint(void)
{
-
- return;
-}
-
+#ifdef DDB
+ ddb_trap();
#endif
+}
/* CPU register mangling inlines */
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